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Citrus2011 [14]
3 years ago
13

Element X is a radioactive isotope such that every 66 years, its mass

Mathematics
1 answer:
LenKa [72]3 years ago
3 0

Answer:

194.5315427 grams

Step-by-step explanation:

The half-life of element x would be 66 years. So, after 20 years you would have:

.5^(20/66) x 240=0.810548 x 240

        =194.5315427 grams of the element left ......

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Can someone help me please i didnt learn this
OLga [1]

Answer:

1.) Exponential Growth

2.) Exponential Decay

3.) Exponential Growth

4.) Exponential Decay

Step-by-step explanation:

<u>1.) </u><u><em>f (x) </em></u><u>= 0.5 (7/3)^</u><u><em>x</em></u>

            ↓

always increasing

<u>2.) </u><u><em>f (x) </em></u><u>= 0.9 (0.5)^</u><u><em>x</em></u>

<em>             </em>↓

always decreasing

<u>3.) </u><u><em>f (x) </em></u><u>= 21 (1/6)^</u><u><em>x</em></u>

            ↓

always increasing

<u>4.) </u><u><em>f (x) </em></u><u>= 320 (1/6)^</u><u><em>x</em></u>

<em>          </em>   ↓

always decreasing

<u><em>EXPLANATION:</em></u>

It's exponential growth when the base of our exponential is bigger than 1, which means those numbers get bigger. It's exponential decay when the base of our exponential is in between 1 and 0 and those numbers get smaller.

7 0
3 years ago
Please help <br>I will make Brainleist if you give correct answer ​
spayn [35]

Answer:

A. 2

Step-by-step explanation:

y = 2m + 6

          - _2_

     _2m_ =  _4_

        2           2

m = 2

MARK ME BRAINLIEST!!!!!!!!

5 0
3 years ago
Which equations are equivalent to Y=2/3X-4 when written in slope-intercept form? Check all that apply. A =3X-2Y=4. B=2X-3Y=12. C
klemol [59]

Answer:

B and C

Step-by-step explanation:

Rearrange each equation into slope- intercept form

A

3x - 2y = 4 ( subtract 3x from both sides )

- 2y = - 3x + 4 ( divide all terms by - 2 )

y = \frac{3}{2} x - 2 ← not equivalent

B

2x - 3y = 12 ( subtract 2x from both sides )

- 3y = - 2x + 12 ( divide all terms by - 2 )

y = \frac{2}{3} x - 4 ← equivalent

C

- 4(2x - 3y ) = - 48 ( divide both sides by - 4 )

2x - 3y = 12 ← same as B ⇒ equivalent

D

2(x + 6) = 3y

3y = 2x + 12 ( divide all terms by 3 )

y = \frac{2}{3} x + 4 ← not equivalent

E

2x - 3y = 4 ( subtract 2x from both sides )

- 3y = - 2x + 4 ( divide all terms by - 3 )

y = \frac{2}{3} x - \frac{4}{3} ← not equivalent



4 0
3 years ago
Read 2 more answers
These 2 questions are worth 35 points for the brainliest user. If you answer these two questions, I will answer any of yours for
elixir [45]

Answer:

1. 6,8,10

Step-by-step explanation:

1. 6,8,10

2. Scalene Triangle

4 0
3 years ago
Read 2 more answers
Somebody please help. And be fr cause I’ll give that brainilest or whatever it’s called but please be the right answer.
bearhunter [10]
130 you multiply the left side by 13 to get the right side.
8 0
3 years ago
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